Single-Switch Snow Thrower Control Merges Auger and Wheel Motors

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing power tools, such as snow throwers, face challenges with complex and costly dual grip controls for separate motor activation, leading to user confusion and increased failure points, while lacking a simple method for simultaneous control of multiple elements.

Innovation Solution

A single tool activation switch is introduced that, upon engagement, directs the rotation of both the auger and wheels, with speed inputs allowing for adjustable rotation speeds, and upon release, halts both components, simplifying operation and reducing complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate grip controls are provided for each element/motor (auger and wheels), then separate activation and control of elements is enabled, but device complexity increases and manufacturing cost increases

Engineering Contradiction:

Improveseparate activation controlVSAvoidcontrol system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the activation control for the auger motor and wheel motor into a single grip control mechanism. When the user activates the single grip control, both motors are simultaneously engaged. This combining approach maintains the ability to separately control each element while eliminating the complexity of multiple independent control systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single grip control serves multiple functions: it acts as the activation switch for both the auger motor and wheel motor, and also serves as the operational control for both elements during use. This multi-functional design reduces the overall number of control components needed in the system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate grip controls are provided for each element/motor, then independent control is possible, but the number of parts and potential failure points increases

Engineering Contradiction:

Improveindependent element controlVSAvoidsystem reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

By combining the control functions into a single grip control mechanism, the patent reduces the total number of electrical connections, switches, and control circuits. This consolidation directly reduces the number of potential failure points while maintaining the ability to independently activate and control each motor element.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If separate grip controls are provided for each element/motor, then selective activation is enabled, but user confusion and difficulty in remembering controls increases

Engineering Contradiction:

Improveselective activation capabilityVSAvoiduser operation simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines multiple control functions into a single intuitive grip control that users naturally grasp with their hand. This ergonomic design makes the control mechanism memorable and easy to operate, eliminating user confusion while still enabling selective activation of different elements through the same control interface.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20240159005A1Single-switch snow thrower and power tools including methods of operation

Publication Date: 2024.05.16 TECHTRONIC CORDLESS GP

AI summary

A snow thrower, power tool, or method of operation may include detecting switch engagement at a single tool activation switch. A method may also include directing element rotation for a rotatable work element in response to detecting switch engagement. The method may further include directing wheel rotation for one or more drive wheels in response to detecting switch engagement.